/**
  * @dataProvider provideSet
  * @covers GlobalVarConfig::set
  * @covers GlobalVarConfig::setWithPrefix
  */
 public function testSet($name, $prefix, $var)
 {
     $this->maybeStashGlobal($var);
     $config = new GlobalVarConfig($prefix);
     $random = wfRandomString();
     $config->set($name, $random);
     $this->assertArrayHasKey($var, $GLOBALS);
     $this->assertEquals($random, $GLOBALS[$var]);
 }